What is a HAR file, and how to get one from Chrome
A HAR file (HTTP Archive) is a JSON file that records every network request a browser made while a page was open, including URLs, headers, request bodies, responses and timings. Support teams ask for one because it shows exactly what your browser sent and received when something broke. You can generate a HAR file in Chrome from the Network panel in DevTools in under a minute. Disclosure: I build…
A HAR file, short for HTTP Archive, is a JSON file that records every network request a browser makes while a webpage is open. It includes details like URLs, headers, request bodies, responses, and timings. Support teams often ask for a HAR file when troubleshooting issues, as it provides a detailed snapshot of the browser's communication with the server.
You can create a HAR file in Chrome's DevTools Network panel in just a few seconds. To generate one, open the Network panel, navigate to the problematic webpage, and activate the Preserve log option. Then, reproduce the steps that cause the issue, and finally, export the HAR file from the top action bar. It's crucial to check the file for any sensitive information before sharing it, as it contains potentially confidential data like cookies, tokens, and API keys.
Most modern browsers, including Chrome, Edge, Firefox, and Safari, support HAR file exports. However, always ensure you're sharing sanitized versions unless the recipient specifically requires the full, sensitive data.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
